The Fast Track makes the headache of adjusting a leather strap a thing of the past. With the patented ratchet buckle, the strap can be adjusted from 47Â to 54Â in seconds without any tools or taking the strap apart. Fast Track is available in black and brown. D'Addario is known for innovative, problem-solving, quality musical accessories, offering a complete line of award-winning accessories including cables, picks, tuners, capos, straps, humidifiers, maintenance tools and more.